Die-casting machine



F. LANNERT DIE bAsTING MACHINE Filed Aug. 25. 1930 sept 2K5, 1934.

5 Sheets-Sheet 1 I7.9 Il

@T Mg. @d

Sept. 25, 1934.

F. LANNERT l 1,974,822

DIE CASTING MACHINE Filed Aug. 25. 1930 5 Sheets-Sheet 2 Sept. 25,1934. F'. LANNERT *1,974,822 l DIE CASTING MACHINE Filed Aug.V 25. 1930 5 sheets-sheet 3 @7100 lof Sept. 25, 1934. F. LANNERT 1,974,822

DIE CASTING MACHINE Filed Aug. 25. 1950 5 Sheets-Sheet 4 2a f 26 l 17a-0675151 I 25' ztanv Ea/www?? Sept. 25, 1934.

F. LANNERT DIE CASTING MACHINE 5 sheets-Sheet 5 Filed Aug. 25. 1930 Patented Sept. 25, 1934V 1,974,822 r*DIE-CASTING MACHINE Frank Lannert, Chicago, Ill., assigner to Parason Die Casting Comp poration of Illinois any, Chicago, Ill., a corlApplication August 25; 1930, Serial No. 477,503

p for a pause of variable length to permit the metal to set, the various mechanisms being readily adjustable in accordance with the particular form of casting to be produced.

In the accompanying drawings:

Figure 1 is a vertical sectional view of a diecasting machine embodying the features of my invention.

Fig. 2 is a fragmental elevation looking from the left-hand side of Fig. 1.

Fig. 2a is a fragmental horizontal sectional viewV on line a-a of Fig-1.

Fig. 3 is a fragmental plan view showing the position assumed by the actuating mechanism when the cores are in withdrawn position.

Fig. 4 is a fragmental side elevation looking from the left-hand side of Fig. 2. The core actuating mechanism is here shown in core retracted position. l y

Fig. 5 is similar to Fig. 3, but shows the position occupied when the cores are in inserted position.

Fig.y 6 is a detail view of yone of the gears and cams.

Fig. '7 illustrates the means for operating the brake yand the means for insuring complete separatiorfof the clutch-elements 90 and 91.

Figs. 8-9 and 10 are views of certain devices for operating the clutches. l

Fig. 11 is a fragmental view of a modified construction.

Figs. 12, 13 and 14 illustrate modications of the cams to correspond with the modication illustrated in Fig. 11. l

Figs. 15 and 16 illustrate .modifications ofthe gooseneck-operating means.

Fig. 17 shows the operation of withdrawing the gooseneck.

In the embodiment herein shown of the inven-y tion, the dies consist of a stationary upper part 1- and a vertically movable lower part 2. It will beunderstood that the shape and dimensions of the dies 1 and 2 will vary in accordance with the work in-hand. 'I'he 3 which is vertically ovable upon guide rods. 4 whichV constitute part o the machine frame. The table 3 is adjustablyesecured to a head 5 so that the normal elevationofzhe table 3 may be varied in accordance with the dimensions of the die. In

Sie 2 is secured toga table Y 15 claims. (ci. 22-69) this instance, the connection between the table 3 and the head 5 consists of vertical studs 6 having a screw-thread connection with the head .a5 so that they may be adjusted up and down. The table 3 rests upon thesel studs and is held in contact with them by means of a screw 7 which extends through an opening 8 in the head 5 and engages the table' 3.

The head 5 is moved up and clown by means comprising four toggles 9, 10, 1l and 12 (Figs. 1, 2 and 2a), the lower ends of which are pivoted in the machine frame at 13 and the upper ends of which are pivoted to the head 5 at 14. The middle points of the toggles 9 and 10 are connected to the middle points of the toggles l1 and l2, respectively, by means of links 15. The adjustable connectionpbetween the table 3 and the head 5 permits of adjusting the` die 2 into close contact with the die 1 when the toggles are on dead center. The toggles are operated by means of a member 16 which is virtually a-connecting rod, Asaid member being pivtally connected to lthe middle points of the toggles 11 and 12 at 16a and to a crank pin 17 extending between two spur gear wheels 18 and 19. These gear wheels are journaled in bearings in the machine frame and are arranged to be rotated in unison by means of an elongatedpinion 20 xed upon the drive shaft 21. A drive pulley 22 rotatably mounted on said shaft is arranged to be connected.v thereto by means of a clutch 23 which is operable by a hand starting lever 24 pivoted in the machine frame at 25. The lower arm of the hand lever 24 is connected by means of a pin-and-slot to a rod 26 which is supported in the machine frame for horizontal reciprocation. The inner end of said rod is beveled, as shown in Figs. 9 and 10. On the adjacent side of the gear Wheel 19 are twov dogs v2'7 and 28, said dogs being pivoted at 30 to diametrically oppositepoints on the gear wheel and being normally held against stop pins 31 by means of springs 32. Stop pins 33 limit outward pivotal movement of the dogs. Said dogs have beveled surfaces adapted to engage the correspondingly beveled inner end of the rod 26. In the rotation of the gear wheel 19, one of the dogs will engage the end of the rod 26 and push said rod outwardly, thereby'throwing out the clutch 23 and thus stopping the mechanisms .driven by said clutch at the'end of a half-revolution of the gear wheel. The beveled surface on the dog 27 isV adapted to impart a longer movement to the rod 26 than` the dog 28, fora reason to appear hereinafter.v *g

It will be seen that by reference to Figs.`1and" 2* that the toggles 9,- 10 and 1'1---12 are operated by another toggle formed of the connecting rod l Hence it will be seen that the point 17 moves a substantial distance (approximately ten degrees) after the die 2 has been pressed against the die-1,

and that the point 17 moves a similar distance bev yond its dead center position before the die 2 is withdrawn from the die 1.

34 and 35 (Fig. 1) denote a pot and a furnace, respectively, which may be of any preferred character. The means for transferring metal from the pot to the dies 1 and 2 comprises a ladle or gooseneck 36 having a nozzle 37 adapted to engage the inlet opening of the dies. One end of the gooseneck 36 is supported by means of two adjustable arms 38 (Figs. 1 and 2) the lower ends of said arms being pivoted to the head 5 at 39 and their upper ends being attached to a crossbar 40. The gooseneck 36 is provided with a hook 41 that engages the cross bar 40. It will be seen that as the head 5 is raised and lowered the'adjacent end of the gooseneck also will rise and fall. In order that the gooseneck may at the same time be moved toward and away from the dies, theouter end of the gooseneck is provided with a rigid arm 42 which is pivoted at .43 to two levers 44 (Figs. 1 and 2*). These levers are pivoted in the machine frame in any-preierred manner. Herein I have shown two brackets 45 (Fig. 3) which are xed to a head 46 which in turn is iixed to the upper ends of the guide rods 4. The outer ends of the brackets 45 are supported from the base of themachine by means of two braces 47 (Figs. 1 andf2). The levers 44 are pivoted to the brackets 45 at 48. The lower ends of the levers 44 are adjustably connected to a link 49 which is pivoted at 50 to two arms 51 (Fig. 2*) which are pivoted `in the framework of the machine at 52. Intermediate their ends the arms 51 are connected to one end of the member n36 will be lifted out 0f the pot 34 and pl 16 by means of apivoted link 53.

Referring to'Fig. 1, it will be seen that as the gear wheels 18 and 19 revolve in the direction indicated by the arrow, the die 2 will be lowered in order to permit of the withdrawal of the casting a, and that the gooseneck 36 will be simultaneously withdrawn from the dies and lowered into the pot to take up another charge of molten metal. These movements will be completed in a halfrevolution of said gears. In the succeeding halfrevolution of the gears the die 2 will be returned into engagement with the die 1 and the gooseneci d engagement with the dies. As illustra in Fig. 17, the means for operating the gooseneck 36 arranged to lowerthe gooseneckin proper timed relation to the lowering of the die 2 so that the gate b, that is to Say. the metal extending between the nozzle 37 and the body of the casting, shall not be subjected to lifting or bending stresses, thusV preventing damage to the casting.

In order that the gooseneck 'may be pressed against the'inlet opening of the dies with the proper degree of force, the levers 44 are adjustably connected to the link 49as before stated.' While this connection may be of any preferredcharacter, I` have herein shown a crosshead 54 which is grees) to move before reaching dead center position, and remains pressed against the dies until the point 17 has moved approximately ten degrees beyond its dead center point.

Molten metal is forced from the gooseneck 36 into the dies 1 and 2 by means of pressure iluid, as for example, compressed air. The pressure uid is suplied to the gooseneck through joined piping 57 (Fig. 4). Said piping communicates with piping 58 stationarily `mounted upon the side of the machine. In the piping 58 are two valves 59 and 60 which may be of ordinary construction, the stems of which valves are arranged to be operated to open the valves by means including a lever 61. The lever 6l is pivoted in the machine frame at 62 intermediate the two valves. The stem of the valve 59 extends downwardly into position to be lifted by one arm of the lever 61, whereas the stem of the other valve extends upwardly into position to be depressed by 'an angular portion 63 of said lever. It will be seen that when the righthand arm of the lever 61 is raised, as

viewed in Fig. 4, both of the valves will be positively opened. When the lever 61 is swung in-the opposite direction either or both of the valves will be automatically closed. The use of two valves reduces the danger that the supply of compressed air to the gooseneck will not be shut oii because of sticking or other defective operation of one of the valves.

After the valves 59 and 60 have been closed and before the gooseneck is withdrawn from the dies, it is desirable to relieve the air pressure in the piping between the valve 59/and the gooseneck in order that metal shall not be forced out -of the gooseneck when the latter is moved away from the dies. I therefore provide a relief valve 64 (Fig. 4) comprising a valve casing interposed in the piping between the valve 59 and the gooseneck.

Said asing has an outlet which is arranged to be blanked by a plunger 65 connected to the lever 6l. Immediately after the valves 59 and 60 have closed and before the gooseneck is removed from the dies, the plunger 65 opens the outletof the valve casing 64 and thus allows the residual air pressure upon the metal in the gooseneck to escape to the atmosphere. Before the valves 59 and 60 are again opened, said outlet is closed. The means for operating the lever 61 will be presently described.

Means has been provided for automatically inserting cores into the cavity formed between the dies and for automatically withdrawing the cores. In the present instance, means has been provided for thus operating four cores, but it will be understood thatthe precise number is not of the essence of the invention.

In the construction shown in thedrawings three cores arearranged to extend horizontally into the die cavity, one core being inserted vertically into the cavity from above. Referring now to Figs. 1 and 2, the horizontally extending cores' are numbered 66 and the vertically extending core is numbered 67. The means for operating the three horizontally extending cores are sub- -teeth formed in a shaft 81.

stantially similar and therefore a description of one will suiiice.

As shown in Fig. 1, the core 66 therein illustrated is adjustably secured to a slide 68 rwhich is guided for horizontal reciprocation toward and away from the dies by means of a bracket 69 rigid with the head 46. A lever 70 pivoted to the bracket 69 is connected by means of parallel links 71 to the slide 68. In order that the range of movement of the lower 'ann of the lever 70 may be varied in accordance with the length of the core and still have the outward movement of the slide terminate always at the same point, the lever 70 is provided with a series of openings 72 (Fig. 4) and the bracket 69 -is'formed with a similar series of openings 73 (Figs. 1 and 4), so that a pivotpin 74 may be adjustable into any desired pair of openings in the lever and the bracket. The upper arm of the lever 70 is connected by means of parallel links 75 (Fig. 3) to a slide 76 which inturn is connected to a link 77 that is pivoted to one arm of a three-arm lever 78. The lever 78 is pivotally mounted upon a stud 79 fixed in the machine frame. The de'- vices for operating the other two horizontally extending cores are connected to the lever 78 by means of links 77 and 77h. It will be seen that the link 77 and the arm of the lever 78 to which it is pivoted constitute a toggle, the same y being of course true of the links 77 and 77b an the corresponding lever arms. y

As shown in Fig. l', a 'stop 79li rigidly connected tothe core is arranged to abut against the die 1. The screw-threaded stem 79" and nuts 79c serve to connect the core to the slide 68. In setting up the machine, when the lever 78 is in the coreinserting position, the nuts 79c are adjusted so as to tak'e up all play in the linkage and press the stop 79 rmly against the die 1 with the pressure required to resist the force of the metal against the core.

vThe vertically extending core 67 (Fig. 1) is secured to a head 80 which is secured to two vertically extending stems 80. These stems have rack teethmilled therein to mesh with pinion The shaft 81 is herein shown as drivenI bymeans including a crank arm 81a fixed to said shaft and connected by means of an adjustable link 81b to the lever 70 that operates one of the cores 66. The means for pivotally moving the lever 78 consists of -a pitman 82 which is connected to a crank pin 82a that extends between and is carried by two spur gears 83 and 84. The pitman 82 and the gears 83 and 84 constitute a toggle for actuating thev toggles 77, 77l and 77|. The gears 83 and 84 are mounted upon alined studs 84 fixed in the machine frame. .Said gears mesh with a pinion 85 which is arranged to be driven through bevel gears 86 from a shaft 87.

Means of any preferred character may be provided for driving the shaft 87. Herein-I have .shown a fly wheeler drive pulley 88 rotatably mounted upon the shaft 87 and continuously driven from any preferred source of power, as,

by means of a beltI 89 (Fig. 3). When the shaft 87 is to be driven, the pulley 88 is connected to said shaft by means of al clutch consisting, in this instance, of a'lug 90 on the pulley 88 ar# ranged to engage a lug 91 on a clutch collar '92 Which is splined to the shaft 87.

While the means for operating the clutch collar 92 may partake of various forms, I have herein shown it as under a dual control. As illustrated in Fig. 2, the hand lever 24 is rigidwith 92 will be moved in the direction to place the lug 91 in the path of the constantly-revolving lug and thus cause the shaft 87 to be driven.

The other means for operating the clutch collar 92 consists of two cams 98 and 99 (Fig. 3) secured to the lower side of the gear Wheel 82 at diametrically opposite points. These cams are arranged to engageone arm of a lever v (Fig.

5) which is pivoted at 101 in the machine frame,I

the other arm of said lever being connected to a link 102 (Fig. 7) which in turn is pivoted to an arm 103 which is rigid with the arm 96." Engagement .of one of the cams 98 and 99 with the lever 100 causes the clutch collar 92 to be moved away from the drive pulley 88.' In order to insure that the lug 91 shall be moved far enough laway from the lug 90 so that there shall be no danger of clashing, I provide means such as a lever 104 (Fig. 7) pivoted at 105 in the machine frame and having a beveled surface 106 which is ar'- ranged to bear against the lower edge of the arm 103. A spring 107 tends to move the lever 104 inthe direction to cause the beveled surface 106 to move the arm 103 and thus the clutch collar 92 a slight distance in addition to the movement caused by the cam-on the gear wheel 82.

The cam 99 is somewhat longer than the cam 98 and is thus able, through the intervening system of levers and links, to move the hand lever 24 from its leftward position through its middle or neutral position, to its right-hand position to engage the clutch 23;

In order that the mechanism driven by the shaft 87 shall stop promptly upon disengagement of. the clutch collar 92, I have provided means which, in the present embodiment of the invention, comprises a brake drum 108 xed upon said shaft and arranged to be engaged byv a brake shoe 109 (Fig. 4) carried by an arm 110 that is pivoted at 111. The brake shoe 109 .is arranged to be moved by means of a cam bar 112 which is mounted for'horizontal movement in a guide 113. One end of said cam bar is connected to the link 102 and consequently to the lever 100. A roller 114 bears against the cam bar 112 and is yieldingly connected to the lever 110.' When either of the cams 98 and 99 operates the lever 100 the brake shoe 109 is pressed against the brake drum 108.

Reverting to Fig.v 4, the means for operating the valves 59,v 60 and 64 comprises a link 119 which is pivoted to one arm of a lever 120 (Fig. 2) pivoted at 121 in the machine frame. The

other arm of' the lever 120 carries a roller stud that lies in a cam groove 122 (Fig. 6) formed in a collarl on the gear wheel 83. The means' for. electing or freeing the casting from the lower die 2 is herein shown as consistingof a suitable number of pins 123 (Fig. 1) fixed to a head 124 which is vertically movable upon a plurality of guide studs 125 secured to and extending downwardly from the lower die 2. The pin or pins 123 extend vertically through an opening or openings in the lower die. When the dies are closed he head 124 is in its lower position, and the upper end of the ejectingpin is flush with the' inner wall of the'die 2. When empty and the machine is sanding idle, the` operation is as follows: The operator starts the machine by swinging the hand lever 24 (Fig. 2) to the right, thereby throwing in the clutch 23. The ensuing movement of the main shaft 21 causes the die 2 to be raised into engagement with the stationary die 1 and also causes the gooseneck 36 to be pressed against the inlet of the dies. These operations take place during a halfrevolution of the gears 18 and 19. As the halfrevolution is being completed, the long dog 27 engages the rod 26 and thus causes'the hand lever 24 to be swung from its right-hand position to its left-hand position. The clutch 23 is thus thrown out and the clutch collar 92 moved into engagement with the driving lug 90. The main shaft 21 which operated the lower die and the gooseneck is thus thrown out of operation, and the shaft 87 which actuates the core mechanism and operates the valves is driven. Thereupon the cores 66 and 67 are inserted into the cavity of the dies. As the gear wheels 83 and 84 complete a half-revolution, the valves 59 and 60 are opened to place the metal in the gooseneck under pressure whereby the molten metal is forced from the gooseneck into the dies, and the short cam 98 throws out the clutch collar 92, places the hand lever 24 in its middle or 'neutral'positiom and applies the brake shoe 109. The entire machine is then at rest. The operator permits the machine to stand idle long enough to allow the metal in the dies to solidify, whereupon he swings the lever 24 to the left (Fig. 2), thereby again throwing in the clutch'collar 92 and Withdrawing the brake shoe. At the beginning of the ensuing half-revolution of the gear wheels 83 and 84 the valves 59 and 60 are closed and the relief valve 64 opened. As the gear wheels 83 and 84 continue to revolve the cores are pulled out of the casting. As the gear wheels 83 and 84 complete a half-revolutionthe long cam 99 throws out the clutch collar 92, applies the brake shoe 109 and throws in the clutch 23. The main shaft 21 is thereby driven to cause the lower die 2 to descend and the gooseneck 36 to withdraw from the dies..

As the die 2 descends, the ejector head 124 comes into engagement with the pins 126 and thus frees the casting from the die 2. As the gear wheels 18 acter that no extended pause is required after the dies have been lled, the short cam 98 may be removed, thus enabling the machine to perform a complete cycle of operations and come to rest with the dies separated. l

The cores are usually slightly tapered, the taper being too slight to be illustrated in the drawings.

In spite of such taper a great deal of power is reV quired to withdraw the cores, as the metal clings to them, and in the case of some alloys the metal contracts so as to grip the cores. vThe continuously driven y wheel 88 provides the power necessary for the withdrawal of the cores. It will be seen that the power is exerted through a .power-- multiplying gear train and through `a system of toggles. These toggles at the commencement of their operation exert a powerful and slow pull on the cores. A slow pull at rst is highly desirable to avoid cracking the casting. The means whereby ample power is available for the withdrawal of the cores is one of the important features of my invention.

It will be noted that the die-operating mechanism and the goeneck-operating mechanism are driven from one source of power, namely, the pulley 22, and that the core-operating mechanism is driven through a separate source of power, i. e., the fly wheel 88. The provisionof two drives as compared with a single drive actuating all the mechanisms through a cam or set of cams, is highly advantageous since it makes possible the y application of more power and permits of varyvticableto have the machine go through its cycle of operations without a pause. This result may be eiected by omitting the dog 98 (Fig. 3). As hereinbefore explained, the toggles that operate the die 2 are actuated by a toggle formed of the memberl and the wheels 18 and 19. Hence a substantial amount of movement of the point 17 as it approaches and leaves its dead center position produces a relatively slight movement of the die 2 and the gooseneck. Similarly the toggles 77, 77 and 77h are actuated by the toggle 82. The cores are pressed into operative position while the point 82 still has a substantial distance to move before reaching dead center position; and ,the cores remain in operative position while the point 82a is moving a substantial distance beyond its dead center position. The total movement of the gear wheels 83 between the point'where the cores are pressed into position and the point where they are withdrawn approximates twenty degrees and is sufficient for the cam 122 to operate the air supply and relief valves when the casting is of Such character that the metal solidiies quickly. Hence the dog 98 may be removed, and the machine caused to go through its complete cycle automatically.

Another modification is illustrated in Fig. 11. The link 94 may be omitted and a hand lever 130 may be secured to theshaft 97 so as to permit of manually operating the clutch 90, 91 wholly independentlyV of the clutch 23. With such a modication, the two dogs on the gear wheel 19 would be of the same height as indicated at 27il and 28"L in Figs. 13 and 14, and the two cams on the gear wheel 83 also would be of the same throw as shown at 988L and 99 in Fig. 12.

I'he cam 122 also may be omitted and the air valves operated manually, thus permitting of the application of air pressure only as long as desired, instead of as long as the machine is at rest, as in the construction first described.

partakeof various forms. For example, in lieu of the pivoted arms 38 I may employ brackets 131 (Fig. 15) rigidly secured to the head 5, said brackets having a cam slot 132 therein in which the crossbar 40 is slidable. It will be seen that as the head 5 is lowered and the levers 44 are swung outwardly, the rod 40 will slide downthe cam slots 132, thus withdrawing the gooseneck from the dies, and that as the head 5 and levers 44 are moved in. the opposite direction the gooseneck Will be moved into operative engagement with the die..

Fig. 16 illustrates a further modification of the gooseneck-operating means wherein brackets 133' are xed to the head 5, said brackets having guide bearings within which guide rods 134 are slidable.

`The guide rods 134 support the crossbar 4o. It will be seen that the movement imparted to the gooseneck by means of the construction shown in Fig. 16 will be the same as in the case of the l modification illustrated in Fig. 15.

1. A die-casting machine comprising, in` com- -bination, a stationary die section, a coacting die section, toggle `means for moving the secondmentioned die-section, two coaxial spur gears p y having crank pins on their adjacent faces, a member connecting the toggle means to said crank pins, a gooseneck, one end of which is arranged to be moved by said toggle means, mechanism actuated by said'member for modifying the movement Aor the gooseneck produced by said toggle neans, a drive for said gears, a clutch controlling said drive, a dog on one of said gears, and means actuated by said dog for throwing out the clutch.

2 A die-casting machine comprising, in combination, a stationary die-section, la coacting die- Section, a table supporting the second-mentioned die-section, means for moving the table toward and away from the stationary die-section, a gooseneck, an arm pivotedat one end to the table and at its other end to one end of the gooseneck, and means connected to the other end of the gooseneck ior moving the gooseneck toward and away from the die-sections as the table is reciprocated.

3. A die-casting machine having, in combination, dies, means for operating the dies, a core,

mentioned drive, manual means for-throwing in s the rst-mentoned clutch, a connection between said manual means and the second-mentioned clutch, a part rotated by the first-mentioned drive and carrying a dog for throwing out .the first Y mentioned clutch and throwing in the secondmentioned clutch, a member rotated by the secf ond-mentioned drive, two diametrically opposite cams on said member, one of said cams being v arranged to throw out the second clutch, and the 4. A die-casting machine having, in combination,.dies, means for operating the dies, a core,

, means for operating the core, and means for operating said dies and core in' timed relation to one another, comprising a drive for the dies, a drive for the core-operatingrmeans, la clutch for the inst-mentioned drive, a clutch for the second-mentioned drive, manual means for throwing in the first-mentioned clutch,` a connection between said manual means and'the second-mentioned clutch, means actuated by the iirst-mentioned drive for throwing out the rst-mentioned clutch and throwing in the second-mentioned clutch, means actuated by the second-mentioned drive for throwing out the second clutch and then throwing out the second clutch and throwing in the rst clutch after the operator has thrown in the second clutch, and means actuated by the rst drive for throwing out the first-mentioned clutch.

5. A die-casting machine having, in combination, dies, means for operating the dies-cores, means for operating the cores, means for controlling the injection of metal into the dies, andmeans for operating said dies, cores, and controlling means in timed relation to one another, comprising a drive for the dies, a drive for the core-operating means and controlling means, a clutch for the first-mentioned drive, a clutch for the second-mentioned drive, manual means for throwing in the first-mentioned clutch, a connection between said manual means and the secondmentioned clutch, a part rotated by the rstmentioned drive and carrying a dog for throwing out the first-mentioned clutch and throwing in the second-mentioned clutch, means operated by the second-mentioned drive for throwing out the second clutch, means actuated by the secondmentioned drive for throwing out the second clutch and throwing in the iirst clutch after the operator has thrown in the second clutch, and a dog carried by said part diametrically opposite the first dog for throwing out the first-mentioned clutch. v

6. A die-casting machine having, in combination, dies, means for operating the dies, cores, means for operating the cores, a gooseneck for injecting metal into the dies, valve means'for controlling the ejection of metal from the gooseneck, and means for operating said dies, cores, gooseneck and valve means in .timed relation to one another, comprising a drive for the dies and the gooseneck, a drive for the core-operating means and valve means, a clutch for the rstmentioned drive, a clutch for the second-mentioned drive, manual means for throwing in the mst-mentioned clutch, a connection between said -manual means and the second-mentioned clutch,

mentioned clutch. i

'1. A die-casting machine having, in combina- 45 tion, dies, means for operating the dies, a core, means for operating the core, means for coniao trolling the injection of metal into4 the dies, ,and

means for operating said dies, core and controlling means Vin timed relation'to oneanother, comprising a drive for the dies, a drive for the coreoperating means and controlling means, a clutch for the first-mentioned drive, a clutch-for the second-mentioned drive, manual means for throwing in the first-mentioned clutch, a connection between said manual means and the second-mentioned clutch, a part rotated by the Ifirstmentioned drive and carrying a dog for throwing out the rst-mentioned clutch and throwing in the second-mentioned clutch, a member rotated by the second-mentioned drive, two diametrically opposite cams on said member, `one, of said cams being arranged to throw out the second clutch, and the other cam being arranged to throw out the second clutch and throw in the rst clutch after the operator has thrown in the second clutch, and a dog carried by said part diametrically opposite the first dog for throwing out the first-mentioned clutch, and a brake for the second-mentioned drive arranged to be actuated by each of said cams.

8. A die-casting machine having, in combination, dies, means for operating the dies, a core, means for operating the core, means for controlling the injection of metal into the dies, and means for operating said dies, core, and controlling means in timed relation to one another, comprising a drive for the dies, a drive for the core-operating means and controlling means, a clutch for the first-mentioned drive, a clutch for the second-mentioned drive, manual means for throwing in the rst-mentioned clutch, a con- -rst clutch after tthe operator has thrown in the second clutch, and a dog carried by said part diametrically opposite the iirst dog for throwing'y out the mst-mentioned clutch.

9. A die-casting machine. having, incombination, dies, means for operating the dies. a core, means for operating' the core, and means for operating said dies and core in timed relation to oneanother, comprising a drive forthedies, a drive for the core-operating means. a clutch for the first-mentioned drive, a clutch for the second-mentioned drive, manual means for throw,

ing in the first-mentioned clutch, a connection between said manual means and the second-mentioned clutch, means actuated by the iirst-mentioned drive for throwing out the first-mentioned clutch and throwing in the second-mentioned clutch, means actuated by' the second-mentioned drive for throwing .out the second clutch and throwing in the rst clutch, and means actuatedl by the iirst4 drive for throwing out the first-mentioned clutch. n 10. A die-casting machine having, incombination, a gooseneck, piping to supply pressure iluid to the gooseneck, two shut-oir valves in said piping, one of said valves having an upwardly extending operating stem and the other a downwardly extending operating stem, a lever pivoted at a point between the valves, one arm of said lever being arranged to operate one stem and the other arm the other stem, and means for actuating the lever.

11. A die-casting machine having, in combination, dies, means to operate the dies, a gooseneck, means to apply the gooseneck to and withdraw it from the dies, a core, means to insert the core into and withdraw it from the dies, a drive for the die-operating means and the gooseneck-operating means, and a wholly independent source of power for driving the core-operating means.

12. A die-casting machine having, in combination, dies, a core, a toggle for inserting the core into and withdrawing it from the dies, and a second toggle for actuating the first toggle, the core being in its operative'position while the second toggle still has a substantial distance to move before reaching its dead center position.

13. A die-casting machine comprising, in combination, dies and a gooseneck, means for operating the dies and the gooseneck, a clutch through which said means is driven, a core, means for inserting the core into the dies and withdrawing it therefrom, a clutch through which the coreoperating means is driven independently of the die operating means, means actuated in timed relation to the die and gooseneck-operating means for throwing out the mst-mentioned clutch and throwing -in the second-mentioned clutch, and means actuated in timed relation to the core-operating means for throwing out the second-mentioned clutch and throwing in the mst-mentioned clutch.

14. A die-casting machine comprising, in combination, dies and a gooseneck, means for operating the dies and the gooseneck, a clutch through which said means is driven, a core, means for the core into the dies and withdrawing it therefrom, a clutch through which the coreoperating means is driven independently of the die operating means, means actuated in timed relation to the die and gooseneck-operating means for throwing in the second-mentioned clutch, and means actuated in timed relation to the core-operating means for throwing out the second-mentioned clutch and throwing in the mst-mentioned clutch, the third mentioned means being arranged to throw out the first-mentioned clutch after said clutch has been thrown in by the fourth mentioned means.

15. A die-'casting machine having, in combination, a frame, dies supported by said frame, a plurality of cores, and means for inserting and withdrawing the cores from the dies comprising a slide for each core supported by said frame, a lever pivoted intermediate its ends on said frame and connected at one end to said slide, and a second slide on said frame to which the other end of said lever is linked, an actuating lever pivoted in said frame and having a plurality of arms each linked to one of the last mentioned slides, and means for oscillating the plural-armed lever to reciprocate the cores.

, FRANK LANNERT. 

